What’s the film materials of chilli sauce square bottoom sachet intended for water boiling sterilization

Standup screw cap pouches are an important part of the packs for chilli sauce in the current market. The standup spout pouch utilizes a folded gusset at the bottom, to hold more products. Then again, they will better present display when they stand on the goods shelves. Here, this chilli sauce square bottoom sachet needs water boiling sterilization, so we should choose multi-layer the pouches.Based on a flexible combination of various polymer film materials, the foil materials are able to provide excellent barrier properties, protecting the chilli sauce from air, moisture, and light. Besides, a creative artwork design can be printed on all sides of the standup pouch, including all the information for branding and sale, which makes the final package more attractive to consumers.

As we know flexible converter located in Qingdao, China, we are making the best use of the packaging film materials in the market, listed below.

• fossil chemical polymer films
• Aluminum foil metal sheet
• vacuum metalized film materials
• Ceramic film substrates
• plant-based biopolymer materials
• biodegradable film materials
• compostable substrate films
• Fully recyclable substrate films

We are devoted to creating story-telling standup screw cap bags for chilli sauce that increase product sales and establish a good brand image.

In this post, we will analyze the exact foil materials of this 450ml chilli sauce standup bag for water boiling sterilization, hoping it could serve as a reference for your products.

Now, let’s get into the details of this chilli sauce square bottoom sachet square bottoom sachet.

Laminated Foil Materials

This foil material is a reinforced structure with excellent properties for sauce packages. The foil structure is BOPP/VMPET/LDPE. The below graphic shows foil materials.

Next, We will take further about each substrate film material.

BOPP Film

BOPP film is short for biaxially orientated polypropylene film, which is one of the most common print substrates in flexible packaging.

BOPP film can be produced using either a tubular process or a tenter frame process. In the tenter frame process, a thick extruded sheet is heated to its softening point and then mechanically stretched by 300–400%. So BOPP film have many advantages, including

• Clarity: Biaxially oriented films are very clear.
• Strength: They have high tensile properties and improved toughness
• Flexibility: They are more flexible
• Barrier properties: They have improved barrier properties
• Shrinkability: They can be made relatively easily shrinkable

Glossy BOPP Film

VMPET Film

VMPET film is short for vacuum metallized polyester film, which is achieved under vacuum conditions to deposit a thin layer of aluminum atoms onto the surface of PET (polyester) film substrate. And finally, realize a bright metallic film that is widely used in flexible packaging and standup pouch packages. It’s only one of flexible package

Vacuum metallizing can be used for functional purposes. Vacuum metallizing is commonly used on device components, plastic parts, and parts that will be on the exterior of a device. It can provide a variety of benefits, including, visual appeal, Physical protection, Protection against oxygen and moisture, and Creating or limiting electrical conductivity. Vacuum metalizing is also safer than other processes, like chrome plating, because it doesn’t require mixing chromium with cyanide. So VMPET film is a good film for water-boiling sterilization bags.

VMPET Film

LDPE Film

LDPE film is short for low-density polyethylene film, which is the most commoniy used inner sealing film for multi-layer flexible packaging in various applications.

LDPE, or low-density polyethylene, is a thermoplastic polymer that is a member of the polyethylene family of plastics. It is known for its flexibility, toughness, transparency, and corrosion resistance. LDPE is also lightweight, easy to fabricate, and has good chemical and impact resistance. LDPE is nontoxic, non-contaminating, and has a high degree of break resistance. It’s also lightweight, corrosion resistant, and has good chemical and impact resistance. LDPE is often used in packaging materials, such as milk pouches and food wrappers because it’s a good moisture barrier and keeps products fresh. It’s also used in orthotics and prosthetics.

LDPE Film

These 3 layers are bonded together into a finished laminated foil material under the dry lamination or solvent-free lamination process. Usually, we describe the finished laminate as BOPP/VMPET/LDPE foil. If you have any questions or doubts, you can send me an email at any time.

Thickness

As you can see below picture, the overall thickness of this spout pouch is 0.120 mm, which equals 120 microns for this laminated foil.

So, how does this foil structure perform when it is intended for standup chilli sauce standup bags? Will it break during the transit?

Great Standup Effect

Through the below video, you may learn the standing effect when 450gr of chilli sauce is filled into closure bag based on this laminated foil PET/VMPET/LDPE.

Please note, BOPP/LDPE foil structure should not be taken to convert standup spout bags, as it may be too soft to present a good standing profile. In particular, BOPP/LDPE is so bad for box bottom pouch.

Mechanical Property

The spout package will protect the chilli sauce product during filling, transit, and distribution. Under the emergency circumstances of unexpected shock in delivery or packages falling off the goods shelf, the spout package will never be allowed to break. Can you ever imagine the leaked chilli sauce contaminating the cartons or the floor?

We put the mechanical property of this 450ml chilli sauce standup sachet on our top priority in our manufacturing plant. Serious measures are taken in our QC system, to assure each order is finalized with the expected result.

To be short, a drop test of a filled package is one of the most reliable ways to check if the package may burst under sudden sharp forces.

Here, we will going to fill 450ml water into this bag, perform the drop test from 1.6 meters high, 3 times, and check if it breaks.

When the volume goes bigger, there will be higher requirements for the mechanical strength of this spout bag, and we may need to change the foil structure, like PA/VMPET/LDPE for packs around 500ml, NY/LDPE or PET/NY/LDPE for packs around 1000ml.

At present, we are outputting the standup spout pouch with a maximum volume of 5 liters, mainly for restaurant purposes. This 5 litre spout pouch is of excellent bag strength, and you can have a further understanding through the below video to show our drop test.

Ok, You may reach us for further ideas if you have any questions.

Barrier Performance

Based Upon Past Experience, all the bags and sachets for chilli sauce should be light-shielding to protect the formulas work as expected. Because strong light will decrease taste of the chilli sauce, and some chilli sauce may deteriorate. Chilli sauce products will be kept away from the strong light to stay function-active as long as possible.

In the above picture, we are producing for our chilli sauce customers, which is fully opaque, and keeps the product in a fine situation even under daylight conditions.

Furthermore, WVTR (short for water vapor transmission rate) and OTR (Oxygen Transmission Rate) are evaluated for this laminated foil, to decide if this spout doypack is finally meeting the requirements of each customer.

Item	Standard	Unit	Typical Value
Water Vapor Transimission Rate	ASTM E 96	g/m2/24hr	19.5
Oxygen Transmission Rate	ASTM D 372-99	cc/m2/24hr	8.5

Technical Data Sheet of 450ml chilli sauce standing packaging

Here, we attach the specification sheet of this 450ml chilli sauce sahcet based on foil laminate PET/VMPET/LDPE.

More tests are included in this specification sheet with items available listed as below.

1. Yield (grams per square meter)
2. Tensile Strength (Mpa)
3. Elongation Rate  (%)
4. Coefficient of friction, short as COF
5. Solvents Left (mg/m2 )
6. Sealing Strength (N/15mm)
7. Sealing Conditions
8. Bond Strength (N/15mm)
9. Burst Strength (J)
10. Anti-Puncture ability (N)
11. Drop Test Ability (cm)
12. Anti-pressure ability (kgs)
13. Water Vapor Transmission Rate (g/m2/24hr)
14. Oxygen Transmission Rate (cc/m2/24hr)

If you want to learn more about this PET/VMPET/LDPE laminated foil, you can read it here.

PET12/VMPET12/LDPE Foil Laminate Materials

That all. If you have any questions regarding chilli sauce pouches, please reach us. Have a good time.